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SURE: Shizuoka University REpository >
05. 工学部 = Faculty of Engineering >
05. 学術雑誌論文(Journal Article) >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/10297/5250
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| Title: | Noniterative approach to the missing data problem in coherent diffraction imaging by phase retrieval. |
| Authors: | Nakajima, Nobuharu |
| Journal Title: | Applied optics |
| Publisher: | Optical Society of America |
| Journal Volume: | 49 |
| Journal Issue: | 21 |
| Start Page: | 4100 |
| End Page: | 4107 |
| Issue Date: | 2010-07-20 |
| NDC: | 425 |
| Description: | When a very intense beam is used for illuminating an object in coherent x-ray diffraction imaging, the intensities at the center of the diffraction pattern for the object are cut off by a beam stop that is utilized to block the intense beam. Until now, only iterative phase-retrieval methods have been applied to object reconstruction from a single diffraction pattern with a deficiency of central data due to a beam stop. As an alternative method, I present a noniterative solution in which an interpolation method based on the sampling theorem for the missing data is used for object reconstruction with our previously proposed phase-retrieval method using an aperture-array filter. Computer simulations demonstrate the reconstruction of a complex-amplitude object from a single diffraction pattern with a missing data area, which is generally difficult to treat with the iterative methods because a nonnegativity constraint cannot be used for such an object. |
| ISSN: | 00036935  |
| E-ISSN: | 15394522 |
| DOI: | 10.1364/AO.49.004100 |
| PMID: | 20648195 |
| Journal NCID: | AA00543409  |
| Textversion: | author |
| Appears in Collections: | 05. 学術雑誌論文(Journal Article)
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